Java文字转图片超出内容自动换行

刺骨的言语ヽ痛彻心扉 2023-07-20 10:50 2阅读 0赞

效果图  
![在这里插入图片描述][20200401103757306.png]

import javax.imageio.ImageIO;
    import java.awt.*;
    import java.awt.geom.Rectangle2D;
    import java.awt.image.BufferedImage;
    import java.io.File;
    import java.io.IOException;
    
    /** * 作者qq1023732997 */
    public class PictureMerge { 
        public static void textToImage(String str) { 
            try { 
                int width = 390;
                int height = 140;
                BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
                Font font = new Font("黑体", Font.PLAIN, 14);
                Graphics g = image.getGraphics();
                g.setColor(Color.white);
                g.fillRect(0, 0, width, height);
                g.setFont(font);
                Color c = new Color(106, 106, 106);
                g.setColor(c);
                int fontHeight = (int) font.getSize2D();
    
                // 得到当前的font metrics
                FontMetrics metrics = g.getFontMetrics();
                int StrPixelWidth = metrics.stringWidth(str); // 字符串长度（像素） str要打印的字符串
                int lineSize = (int) Math.ceil(StrPixelWidth * 1.0 / width);// 算出行数
                System.out.println(StrPixelWidth + "---:");
                if (width < StrPixelWidth) { // 页面宽度（width）小于 字符串长度
                    StringBuilder sb = new StringBuilder();// 存储每一行的字符串
                    int j = 0;
                    int tempStart = 0;
                    String tempStrs[] = new String[lineSize];// 存储换行之后每一行的字符串
                    for (int i1 = 0; i1 < str.length(); i1++) { 
                        char ch = str.charAt(i1);
                        sb.append(ch);
                        Rectangle2D bounds2 = metrics.getStringBounds(sb.toString(), null);
                        int tempStrPi1exlWi1dth = (int) bounds2.getWidth();
                        if (tempStrPi1exlWi1dth > width) { 
                            tempStrs[j++] = str.substring(tempStart, i1);
                            tempStart = i1;
                            sb.delete(0, sb.length());
                            sb.append(ch);
                        }
                        if (i1 == str.length() - 1) { // 最后一行
                            tempStrs[j] = str.substring(tempStart);
                        }
                    }
                    for (int i = 0; i < tempStrs.length; i++) { 
                        g.drawString(tempStrs[i], 5, (fontHeight + 5) * (i + 1));
                    }
                } else { 
                    g.drawString(str, 5, fontHeight);
                }
    
                File outputfile = new File("D:\\云上\\686.png");
                ImageIO.write(image, "png", outputfile);
                g.dispose();
    
            } catch (IOException e) { 
                e.printStackTrace();
            }
        }
    
    
        public static void main(String[] arg) { 
            String str = "最近经常看到大家动不动就在“随着身体的一阵颤抖”，画面感极强此人多半是在尬舞吧！那么到底“随着身体的一阵颤抖”是什么梗，“随着身体的一阵颤抖”的出处在哪，一起来看看吧：......";
            textToImage(str);
        }
    
    }

[20200401103757306.png]: /images/20230528/a84940d68cd44669a42eab5b2b1c6509.png